168473939 has 2 divisors, whose sum is σ = 168473940. Its totient is φ = 168473938.

The previous prime is 168473911. The next prime is 168473947. The reversal of 168473939 is 939374861.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 168473939 - 2¹⁶ = 168408403 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (168473989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84236969 + 84236970.

It is an arithmetic number, because the mean of its divisors is an integer number (84236970).

Almost surely, 2^168473939 is an apocalyptic number.

168473939 is a deficient number, since it is larger than the sum of its proper divisors (1).

168473939 is an equidigital number, since it uses as much as digits as its factorization.

168473939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 979776, while the sum is 50.

The square root of 168473939 is about 12979.7511147171. The cubic root of 168473939 is about 552.3032218303.

The spelling of 168473939 in words is "one hundred sixty-eight million, four hundred seventy-three thousand, nine hundred thirty-nine".